can we use sealant between grommet and panel installed in the bore instead of under the grommet?
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The reason why this customer asks this:
he has an issue with the thickness of his panels: some panels are thicker than others, but he wants to use the same fasteners for his whole aeroplane. Although his panels are thick, some grommets are still loose due to thickness variation in composites.
you see a gap on the picture
This causes the grommet not to sit completely against the composite panel anymore. The customer is also concerned about galvanic corrosion and insists to use this solution. In fact he mounted himself a sealant between grommet and panel in the bore of the panel. (not under the grommet, under the grommet we suggest to use D40G11-3K)
This is how it looks like:
Camloc recommends not to use a sealant that way, as indicated in the catalog please use the D40G11-3K to seal your 4002 ring retained grommets.
this is how it looks like: after installation with sealant between the bore of the panel and grommet.
advantage: the connection sits fixed.
The sealant application became satisfactory, there have not been any problems encountered on Camloc’s working. Gap disappeared, grommets are fixed on panel.
official answer:
since the customer used his own sealant, we do not guarantee or are responsible for the use of this. Customer will have to test it in his own application.
before sealant installed grommet and stud
This causes the grommet not to sit completely against the composite panel anymore. The customer is also concerned about galvanic corrosion and insists to use this solution. In fact he mounted himself a sealant between grommet and panel in the bore of the panel. (not under the grommet, under the grommet we suggest to use D40G11-3K)
This is how it looks like:
sealant in the bore of the panel
Camloc recommends not to use a sealant that way, as indicated in the catalog please use the D40G11-3K to seal your 4002 ring retained grommets.
installation of sealant D40G11-3K under the grommet
this is how it looks like: after installation with sealant between the bore of the panel and grommet.
panel after installation of sealant between grommet and bore of panel
advantage: the connection sits fixed.
The sealant application became satisfactory, there have not been any problems encountered on Camloc’s working. Gap disappeared, grommets are fixed on panel.
official answer:
since the customer used his own sealant, we do not guarantee or are responsible for the use of this. Customer will have to test it in his own application.
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